Rate

> 100

Regularity

Regular

P waves

Inverted, if present

PRI

< 0.12, if P waves are even visible

QRS

0.08-0.12

Rate

None

Regularity

Unidentifiable

P waves

May be present

PRI

None

QRS

None

Rate

60-100

Regularity

Regular

P waves

Inverted, if present

PRI

< 0.12, if P waves are even visible

QRS

0.08-0.12